package com.ruoyi.framework.web.service;

import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.constant.UserConstants;
import com.ruoyi.common.core.domain.entity.EncryptedDataEntity;
import com.ruoyi.common.core.domain.entity.SysDept;
import com.ruoyi.common.core.domain.entity.SysUser;
import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.exception.user.*;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.MessageUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.WeChatApiUtil;
import com.ruoyi.common.utils.ip.IpUtils;
import com.ruoyi.common.utils.sign.AESUtils;
import com.ruoyi.common.utils.sign.WxDecryptUtil;
import com.ruoyi.framework.manager.AsyncManager;
import com.ruoyi.framework.manager.factory.AsyncFactory;
import com.ruoyi.framework.security.context.AuthenticationContextHolder;
import com.ruoyi.system.service.ISysConfigService;
import com.ruoyi.system.service.ISysDeptService;
import com.ruoyi.system.service.ISysUserService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.util.Set;

/**
 * 登录校验方法
 *
 * @author ruoyi
 */
@Component
public class SysLoginService
{
    private static final Logger log = LoggerFactory.getLogger(SysLoginService.class);

    @Autowired
    private TokenService tokenService;

    @Resource
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisCache redisCache;

    @Autowired
    private ISysUserService userService;

    @Autowired
    private ISysConfigService configService;

    @Autowired
    private WeChatApiUtil weChatApiUtil;

    @Autowired
    private ISysDeptService deptService;

    @Autowired
    private SysPermissionService sysPermissionService;


    /**
     * 登录验证
     *
     * @param username 用户名
     * @param password 密码
     * @param code 验证码
     * @param uuid 唯一标识
     * @return 结果
     */
    public String login(String username, String password, String code, String uuid)
    {
        // 验证码校验
        validateCaptcha(username, code, uuid);
        // 登录前置校验
        loginPreCheck(username, password);
        // 用户验证
        Authentication authentication = null;
        try
        {
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(username, password);
            AuthenticationContextHolder.setContext(authenticationToken);
            // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
            authentication = authenticationManager.authenticate(authenticationToken);
        }
        catch (Exception e)
        {
            if (e instanceof BadCredentialsException)
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            }
            else
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        }
        finally
        {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }


    /**
     * 微信登录
     * @param code
     * @param encryptedIv
     * @param encryptedData
     * @param encryptedDataEntity
     * @return
     */
    public String wxLogin(String code, String encryptedIv, String encryptedData,
                          EncryptedDataEntity encryptedDataEntity) {

        String token = "";
        try {
            //获取微信的sessionKey
            String sessionKey = weChatApiUtil.getUserSessionKey(code);

            WxDecryptUtil wxDecryptUtil = new WxDecryptUtil();
            //微信加密数据解密
            String  data = wxDecryptUtil.decryptWXData(encryptedIv, encryptedData,sessionKey);
            JSONObject json = JSONObject.parseObject(data);
            String openId = json.getString("openId");
            String avatarUrl = json.getString("avatarUrl");

            //解密数据
            String phoneNumber = AESUtils.decrypt(encryptedDataEntity.getEncodeData(), encryptedDataEntity.getSeed(), encryptedDataEntity.getIv());

            SysUser wxSysUser = userService.selectUserByPhoneNumber(phoneNumber);
            SysUser sysUser = new SysUser();
            if (wxSysUser != null){
                sysUser = wxSysUser;
                if (StringUtils.isEmpty(wxSysUser.getOpenid())){
                    sysUser.setOpenid(openId);
                    sysUser.setAvatar(avatarUrl);
                    sysUser.setLoginIp(IpUtils.getIpAddr());
                    sysUser.setLoginDate(DateUtils.getNowDate());
                    userService.updateUserProfile(sysUser);
                }
            }else {
                insertUserDeptOther(sysUser,json,phoneNumber);
            }

            //组装token信息
            LoginUser loginUser = assembleUserInfoToken(openId,sessionKey,sysUser);
            token = tokenService.createToken(loginUser);
        }catch (Exception e){
            log.error("登录失败：",e.getMessage());
        }
        return token;
    }


    /**
     * 校验验证码
     *
     * @param username 用户名
     * @param code 验证码
     * @param uuid 唯一标识
     * @return 结果
     */
    public void validateCaptcha(String username, String code, String uuid)
    {
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        if (captchaEnabled)
        {
            String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + StringUtils.nvl(uuid, "");
            String captcha = redisCache.getCacheObject(verifyKey);
            if (captcha == null)
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
                throw new CaptchaExpireException();
            }
            redisCache.deleteObject(verifyKey);
            if (!code.equalsIgnoreCase(captcha))
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
                throw new CaptchaException();
            }
        }
    }

    /**
     * 登录前置校验
     * @param username 用户名
     * @param password 用户密码
     */
    public void loginPreCheck(String username, String password)
    {
        // 用户名或密码为空 错误
        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password))
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // 密码如果不在指定范围内 错误
        if (password.length() < UserConstants.PASSWORD_MIN_LENGTH
                || password.length() > UserConstants.PASSWORD_MAX_LENGTH)
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // 用户名不在指定范围内 错误
        if (username.length() < UserConstants.USERNAME_MIN_LENGTH
                || username.length() > UserConstants.USERNAME_MAX_LENGTH)
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // IP黑名单校验
        String blackStr = configService.selectConfigByKey("sys.login.blackIPList");
        if (IpUtils.isMatchedIp(blackStr, IpUtils.getIpAddr()))
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("login.blocked")));
            throw new BlackListException();
        }
    }

    /**
     * 组装登录token信息
     * @param openId
     * @param sysUser
     * @return
     */
    public LoginUser assembleUserInfoToken(String openId,String sessionKey,SysUser sysUser){
        LoginUser loginUser = new LoginUser();
        loginUser.setOpenId(openId);
        loginUser.setUserId(sysUser.getUserId());
        loginUser.setUser(sysUser);
        loginUser.setDeptId(sysUser.getDeptId());
        loginUser.setLoginTime(DateUtils.getNowDate().getTime());
        Set<String> menuPermission = sysPermissionService.getMenuPermission(sysUser);
        loginUser.setPermissions(menuPermission);
        UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(openId, sessionKey);
        authenticationToken.setDetails(loginUser);
        SecurityContextHolder.getContext().setAuthentication(authenticationToken);
        return  loginUser;
    }


    /**
     * 记录登录信息
     *
     * @param userId 用户ID
     */
    public void recordLoginInfo(Long userId)
    {
        SysUser sysUser = new SysUser();
        sysUser.setUserId(userId);
        sysUser.setLoginIp(IpUtils.getIpAddr());
        sysUser.setLoginDate(DateUtils.getNowDate());
        userService.updateUserProfile(sysUser);
    }

    /**
     * 记录外部人员信息到其他用户部门下
     */
    public void insertUserDeptOther(SysUser sysUser,JSONObject json,String phoneNumber){
        String nickName = json.getString("nickName");
        String sex = json.getString("gender");
        String openId = json.getString("openId");
        String avatarUrl = json.getString("avatarUrl");

        //不是工厂员工，存在其他用户部门下
        SysDept sysDept = deptService.selectDeptByOther();
        sysUser.setNickName(nickName);
        sysUser.setUserName(phoneNumber);
        sysUser.setPhonenumber(phoneNumber);
        sysUser.setSex(sex);
        sysUser.setDeptId(sysDept.getDeptId());
        sysUser.setAvatar(avatarUrl);
        sysUser.setStatus(UserConstants.NORMAL);
        sysUser.setOpenid(openId);
        sysUser.setCreateTime(DateUtils.getNowDate());
        userService.insertUser(sysUser);
    }

}
